Dispersible fibrous structure and method of making same

Abstract

A dispersible fibrous structure having an in-use wet tensile strength of at least about 40 g/cm; a disposable wet tensile decay of at least about 35% and a method of making the structure. The structure has at least one property selected from a group consisting of: a wet CD maximum slope of less than about 12 kg/7.62 cm, a wet CD Elongation of greater than about 50%, a low elongation CD modulus of less than about 5.0 kg/7.62 cm, and a wet CD Bending of less than about 0.05 gf cm/cm.

1. A hydroentangled dispersible fibrous structure comprising intermingled and mechanically bound fibers, said dispersible fibrous structure further comprising solvent spun binding fibers having a water solubility temperature of less than about 70 degrees centigrade, said dispersible fibrous structure further comprising at least one ply and having no externally applied binders disposed thereupon, the ply having a total in-use wet tensile strength of at least about 40 g/cm; a disposable wet tensile decay of at least about 35%; wherein the disposable wet tensile decay is determined about 24 hours or less after disposal of the structure, and a wet CD maximum slope of less than about 12 kg/7.62 cm. 
   
   
     2. The dispersible fibrous structure of  claim 1  wherein the disposable wet tensile decay is determined about 12 hours or less after disposal of the structure. 
   
   
     3. The dispersible fibrous structure of  claim 1  wherein the disposable wet tensile decay is determined about 30 minutes or less after disposal of the structure. 
   
   
     4. The dispersible fibrous structure of  claim 1  wherein the disposable wet tensile decay is determined about 1 minute or less after disposal of the structure. 
   
   
     5. The dispersible fibrous structure of  claim 1  comprising a ply having a total in-use wet tensile strength of at least about 200 g/cm. 
   
   
     6. The dispersible fibrous structure of  claim 1  comprising a ply having a total in-use wet tensile strength of at least about 400 g/cm. 
   
   
     7. The dispersible fibrous structure of  claim 1  comprising a divalent ion inhibitor. 
   
   
     8. The dispersible fibrous structure of  claim 1  comprising a plasticizer. 
   
   
     9. The dispersible fibrous structure of  claim 1  wherein the structure comprises a hydroentangled nonwoven. 
   
   
     10. The dispersible fibrous structure of  claim 1  wherein the structure comprises an airlaid nonwoven. 
   
   
     11. The dispersible fibrous structure of  claim 1  comprising thermoplastic fibers. 
   
   
     12. The dispersible fibrous structure of  claim 1  further comprising at least one compound selected from a group consisting of: a water-soluble organic salt, a water-soluble inorganic salt, and a boron compound. 
   
   
     13. The dispersible fibrous structure of  claim 1  wherein the structure has a wet CD Elongation of greater than about 50%. 
   
   
     14. The dispersible fibrous structure of  claim 1  wherein the structure has a low elongation CD modulus of less than about 5.0 kg/7.62 cm. 
   
   
     15. The dispersible fibrous structure of  claim 1  wherein the structure has a wet CD Bending of less than about 0.05 gf cm/cm. 
   
   
     16. A hydroentangled dispersible fibrous structure comprising intermingled and mechanically bound fibers, said dispersible fibrous structure further comprising solvent spun binding fibers having a water solubility temperature of less than about 70 degrees centigrade, the dispersible fibrous structure further comprising at least one ply and having no externally applied binders disposed thereupon, the ply having a total in-use wet tensile strength of at least about 40 g/cm; a disposable wet tensile decay of at least about 35%; wherein the disposable wet tensile decay is determined about 24 hours or less after disposal of the structure, and a low elongation CD modulus of less than about 5.0 kg/7.62 cm. 
   
   
     17. The dispersible fibrous structure of  claim 16  wherein the disposable wet tensile decay is determined about 12 hours or less after disposal of the structure. 
   
   
     18. The dispersible fibrous structure of  claim 16  comprising a ply having a total in-use wet tensile strength of at least about 200 g/cm. 
   
   
     19. The dispersible fibrous structure of  claim 16  further comprising at least one compound selected from a group consisting of: a water-soluble organic salt, a water-soluble inorganic salt, and a boron compound. 
   
   
     20. The dispersible fibrous structure of  claim 16  wherein the structure has a wet CD maximum Elongation of greater than about 50%. 
   
   
     21. The dispersible fibrous structure of  claim 16  wherein the structure has a wet CD Bending of less than about 0.05 gf cm/cm. 
   
   
     22. A hydroentangled dispersible fibrous structure comprising intermingled and mechanically bound fibers, said dispersible fibrous structure further comprising at least one ply, the ply comprising solvent spun binding fibers having a water solubility temperature of less than about 70 degrees centigrade, the ply having no externally applied binders thereon, the ply having a total in-use wet tensile strength of at least about 40 g/cm; a disposable wet tensile decay of at least about 35%; and wherein the disposable wet tensile decay is determined about 24 hours or less after disposal of the structure and a wet CD Bending of less than about 0.05 gf cm/cm. 
   
   
     23. The dispersible fibrous structure of  claim 22  wherein the disposable wet tensile decay is determined about 30 minutes or less after disposal of the structure. 
   
   
     24. The dispersible fibrous structure of  claim 22  comprising a ply having a total in-use wet tensile strength of at least about 400 g/cm. 
   
   
     25. The dispersible fibrous structure of  claim 22  comprising thermoplastic fibers. 
   
   
     26. The dispersible fibrous structure of  claim 22  wherein the structure has a wet CD Elongation of greater than about 50%.